PHP: How to check if image file exists?

Question

I need to see if a specific image exists on my cdn.

I've tried the following and it doesn't work:

if (file_exists(http://www.example.com/images/$filename)) {     echo "The file exists"; } else {     echo "The file does not exist"; } 

Even if the image exists or doesn't exist, it always says "The file exists". I'm not sure why its not working...

Answer 1

You need the filename in quotation marks at least (as string):

if (file_exists('http://www.mydomain.com/images/'.$filename)) {  … } 

Also, make sure $filename is properly validated. And then, it will only work when allow_url_fopen is activated in your PHP config

Answer 2

if (file_exists('http://www.mydomain.com/images/'.$filename)) {} 

This didn't work for me. The way I did it was using getimagesize.

$src = 'http://www.mydomain.com/images/'.$filename;  if (@getimagesize($src)) { 

Note that the '@' will mean that if the image does not exist (in which case the function would usually throw an error: getimagesize(http://www.mydomain.com/images/filename.png) [function.getimagesize]: failed) it will return false.